.main{
    max-width: 1280px;
    min-width: 1000px;
    min-height: 700px;
    width: 100%;
    height: 100%;
    margin: 0 auto;
    padding-top: 50px;
    padding-bottom: 50px;
    background-image: url('../img/bg.jpg');
    background-repeat: no-repeat;
    background-size: cover;

    .workspace{
        width: 50%;
        height: 100%;
        margin: 0 auto;
        padding: 50px;
        padding-top: 10px;
        background-color: rgba($color: #ffffff, $alpha: 0.2);
        position: relative;

        .container{
            width: 100%;
            .title{
                height: 70px;
                width: 100%;
                background-color: rgba($color: #000000, $alpha: 0.2);
                margin-bottom: 10px;
                border-radius: 10px;
                p{
                    line-height: 70px;
                    font-size: 30px;
                    color: #dddddd;
                    text-indent: 1em;
                    user-select: none;
                }
            }
            .row{
                .col-xs-3{
                    height: 85px;
                    position: relative;
                    overflow: hidden;
                    cursor: pointer;
                    .card_box{
                        width: 70px;
                        height: 70px;
                        overflow: hidden;
                        border-radius: 10px;
                        margin-bottom: 15px;
                        transform: rotateY(90deg);
                        img{
                            width: 100%;
                            height: 100%;
                        }
                        position: absolute;
                        top: 0px;
                        left: 0px;
                    }
                    .card_back{
                        width: 70px;
                        height: 70px;
                        border-radius: 10px;
                        background-color: rgba($color: #000000, $alpha: 0.2);
                        position: absolute;
                        // transition: all 800ms;
                        transform: rotateY(0deg);
                        top: 0px;
                        left: 0px;
                    }
                }
            }
        }

        .button_area{
            position: absolute;
            top: 20%;
            left: -150px;
            background-color: transparent;
            // min-width: 100px;
            min-height: 60px;
            .btn_box{
                padding: 5px 30px;
                font-size: 25px;
                color: white;
                background-color: rgba($color: #ffffff, $alpha: 0.2);
                border-radius: 10px;
                margin-top: 15px;
                cursor: pointer;
                user-select: none;

                &:hover{
                    background-color: rgba($color: #ffffff, $alpha: 0.1); 
                }
            }
        }
        .notice{
            display: none;
            position: absolute;
            padding: 15px 80px;
            top: 200px;
            right: 10%;
            width: 80%;
            background-color: rgba($color: #000000, $alpha: 0.2);
            text-align: center;
            color: white;
            font-size: 16px;

            .btn_box{
                display: inline-block;
                vertical-align: top;
                // width: 40%;
                padding: 5px 30px;
                font-size: 16px;
                color: white;
                background-color: rgba($color: #ffffff, $alpha: 0.2);
                border-radius: 10px;
                margin-top: 15px;
                cursor: pointer;
                user-select: none;
                &:hover{
                    background-color: rgba($color: #ffffff, $alpha: 0.1); 
                }
            }

        }
    }
}
